User's Manual

COBALT UHF-SERIES CHAPTER 5: COMMAND PROTOCOLS
PAGE 80 OF 140
COMMAND 0X C4 - DESCRIPTION
The Multi-Tag Read EPC Code is used to retrieve the EPC data from all tags within
RF range. A final termination packet is sent when the Timeout Value expires.
C
OMMAND 0X C4 - CBX EXAMPLE
This example instructs the controller to read the EPC data from each tag in range. A
Timeout Value of 3 seconds (0x0BB8 = 3000 x 1msec increments) is set for the
completion of the command.
Command from Host
PARAMETER FIELD MSB LSB
Overall Length of Command
(in words)
0x00 0x06
0xAA
in MSB,
Command ID
in LSB
0xAA 0xC4
0x00
in MSB
Node ID
in LSB
0x00 0x01
Timeout Value
0x0B 0xB8
Tag Limit
in MSB,
0x00
in LSB
0x64 0x00
Not Used
(0x00, 0x00)*
0x00 0x00
Response for Each Tag Found
PARAMETER FIELD MSB LSB
Overall Length of Response
(in words)
0X00 0X0C
0xAA
in MSB,
Command Echo
in LSB
0XAA 0XC4
Instance Counter
in MSB
Node ID Echo
in LSB
<IC> 0X01
Month
and
Day
Timestamp:
(March 19
th
)
0x03 0x13
Hour
and
Minute
Timestamp:
(10:11: AM)
0x0A 0x0B
MULTI-TAG RFID COMMAND 0X C4:
READ EPC CODE